To check if your Android phone is unlocked, try swapping in another SIM card or test your network settings. If calls work, ...

How to activate a T-Mobile SIM card on your phone Activating a T-Mobile SIM card with your phone is the most common method. These steps show you how to do it: Power down your phone and then insert ...

In India, many users face SIM card problems after moving to a new phone. If key settings are not activated, your SIM may stop ...

Select Sim Manager or SIMS. Tap Add mobile plan or Download SIM card or Add SIM. Then follow the on-screen instructions and scan the QR code when prompted.

If you're used to slapping a physical SIM card into a phone, here's how to activate a Cricket eSIM.